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| author |   Mike Snitzer <snitzer@redhat.com> | 2010-12-17 08:34:20 +0100 |
|---|---|---|
| committer |   Jens Axboe <jaxboe@fusionio.com> | 2010-12-17 08:36:01 +0100 |
| commit | 72d4cd9f38b5ed96b75df4c622be25e1c2648dd3 (patch) | |
| tree | a229645cbbc63aad3fa5b57ea9f092e618588890 /drivers/md/dm-table.c | |
| parent | block: Deprecate QUEUE_FLAG_CLUSTER and use queue_limits instead (diff) | |
| download | linux-dev-72d4cd9f38b5ed96b75df4c622be25e1c2648dd3.tar.xz linux-dev-72d4cd9f38b5ed96b75df4c622be25e1c2648dd3.zip | |
block: max hardware sectors limit wrapper
Implement blk_limits_max_hw_sectors() and make
blk_queue_max_hw_sectors() a wrapper around it.
DM needs this to avoid setting queue_limits' max_hw_sectors and
max_sectors directly. dm_set_device_limits() now leverages
blk_limits_max_hw_sectors() logic to establish the appropriate
max_hw_sectors minimum (PAGE_SIZE). Fixes issue where DM was
incorrectly setting max_sectors rather than max_hw_sectors (which
caused dm_merge_bvec()'s max_hw_sectors check to be ineffective).
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@kernel.org
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'drivers/md/dm-table.c')
| -rw-r--r-- | drivers/md/dm-table.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index e2da1912a2cb..4d705cea0f8c 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -517,9 +517,8 @@ int dm_set_device_limits(struct dm_target *ti, struct dm_dev *dev, */ if (q->merge_bvec_fn && !ti->type->merge) - limits->max_sectors = - min_not_zero(limits->max_sectors, - (unsigned int) (PAGE_SIZE >> 9)); + blk_limits_max_hw_sectors(limits, + (unsigned int) (PAGE_SIZE >> 9)); return 0; } EXPORT_SYMBOL_GPL(dm_set_device_limits); |